#11696: The libpng12 spkg should also create symbolic links from `libpng.*` for
its
libraries
------------------------+---------------------------------------------------
Reporter: leif | Owner: leif
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.7.2
Component: packages | Keywords: PNG libpng spkg
Work_issues: | Upstream: N/A
Reviewer: | Author: Leif Leonhardy
Merged: | Dependencies:
------------------------+---------------------------------------------------
Comment(by leif):
Replying to [comment:11 leif]:
> Deleting the symbolic link `libpng.dylib -> libpng12.dylib` can also
cause trouble, namely if `pkg-config` '''is''' installed on Darwin, we
still have a broken / messed-up `libpng12.pc` file (containing
`SAGE_ROOT=${SAGE_ROOT}`), and there's '''no''' system-wide `libpng.dylib`
installed. [[BR]]
> [[BR]]
> Johan Bosman apparently [http://groups.google.com/group/sage-
release/msg/ab91298b636b947a ran into this].
The problem on his MacOS X machine is actually caused by something else,
namely the way matplotlib tries to detect whether `pkg-config` is
installed, and a broken `pkg-config`, exiting with a non-zero status when
called with `--help`.
A preliminary matplotlib-1.0.1.p1 spkg working around this (and adding a
couple of tests and diagnostic messages) can be found
[http://sage.math.washington.edu/home/leif/Sage/spkgs/matplotlib-1.0.1.p1.spkg
here].
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11696#comment:14>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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